Insulating jacket



Oct. 13, 1931. l o. F. MoTTwElLl-:R ET AL 1,827,035

INSULATING JACKET Filed Nov. 25, 1927 4 IAA.

non-uniform. Ourimprovedinsulating jack- Patented Oct# 13, 1931 UNITED s'ra'ias PATEN'iA oi-Eic OLIVER. F. MO'ITWEILER AND DANIEL C. DRILL, OF ALEXANDRIA, INDIANA, AS,-

SIGNORS TO GENERAL INSULATING AND MANUFACTURING COMPANY, 0F ALEX-- ANDRIA, INDIANA, A CORPORATION OIE INDIANA I INSULATING JACKET Application led November 25, 1927. Serial No. 235,554.

This invention relates generally "to insulating jackets, and particularly to jackets adapted to be used for insulating purposes in connection with circular or cylindrical structures such as pipes, boilers, and the like, the predominant object'of the invention being to produce an insulating jacket of the type mentioned which is much more simple to manufacture and which functions more efiic-iently when in use than similar insulating jackets heretofore known. j

Prior to this invention, insulating jackets were produced, each of which was provided with a plurality of V-shaped spaces formed in the body of the insulating material which comprised the jacket. The jackets referred to were provided with these V-'shaped spaces under the false impression that they Weie necessary to prevent cracking of the outer casings ofthe jackets When said jackets were arranged in, circular form about the element to be insulated, but it has been found when an insulating jacket is made inl accordance with our invention, that no V-shaped spaces are necessary as there is no tendency for the outer casings of the ac'kets to be cracked in the absence of said V-shaped vspaces. The elimination of the V-shaped spaces referred torenders the cost of manufacturing our improved jacket much less than the cost of manufacturing the jackets heretofore used.

In addition to the foregoing, it has been found that the presence of the V-shaped spaces in the body of the insulating jacket 1 decreased the insulating eiiiciency of the jacket at the points of location of the spaces. It

is true that the spaces referred to, which are V-shaped when the jacket is in fiat form, are intended to be drawn together when the jacket is arranged in circular form so that mere lines are presented, but these lines destroy the uniformity ofthe density of the insulating material of which the jacket is formed,

and, consequently, seriously affect the insulatQ ing properties of the jacket and render same et does not include any spaces formed'in the insulating material which would affect the uniformity of the density of said material, and, therefore, the insulating properties of re uired.

`the required density. i 'preferably rectangular in plan an may be of the jacket are uniform throughout said jacket.

Also, it was thought heretofore that" the V- shaped spaces were necessary to provide sufiicient flexibility to enable the insulating structure to be Wrapped about pipes or other elements of small diameters, but it has been found that a structure made in accordance with our invention has all of the flexibility `igure l is lan inverted plan` view of a fragment of an insulating jacket made 1n accordance with out invention,- the uppermost face of the jacket in said view being the face thereof which is arranged in contact with the 'element being insulated when the jacket is 1n use' Figure 2 is a plan view of a fragment of an insulating jacket looking at the face thereof which is remote from the element being insulated when the jacket is in use;

Figure 3 is a section on line 3 3 of Fig. l;

Figure 4 is a section on line 4-4 of Fig. 1;

Figure 5 4is a fragmentary perspective showing our improved insulating jacket when Same 1S 1n use.

Figure 6 is a fragmentary section illustrating a modified forni of the fastening means of our improved insulating jacket. i

In the drawings. which illustrate one emimproved .insulating jacket which comprises an insulatin strip formed of a body portion 1 made up of an amount of rock Wool or similar insulating material which has been subjected to compression to ive to said material T e body ortion 1 is gli? l so bodiment of our invention, A designates the Arranged in contact with the tace of the body portion which is remote from the element eing insulated whenthe jacket is in use is a layer of material which is adapted to conline the insulating material oit which the body portion lis formed. This layer may be oi various materials which may be found to besUitable, such as canvas, tar-paper,` cheesecloth, etc., but we prefer to use, and we show in the drawing, this layer being in the term oi wire mesh 2. 'lhe layer of wire mesh 2 is co-extensive with the tace of the body portion l with which it is in contact, and we reter to turn opposite end portions oit said 'ayer orn material rearwardly on itself and secure said portions in said turned-back condition by suitable fastening means to produce elongated loops 3 in which rods d are arranged longitudinally, as shown in Figs. 2 and 3,

Arranged in contact with the tace oi the body portion l opposite to the face thereof having the layer ot wire mesh associated therewith, is a plurality of strips of material 5, preferably of wire mesh. Here also, we may, it desired, employ canvas, tar-paper, cheese-cloth, or other material which may be found to be suitable to produce the strips 5. The strips of material 5 are s aced from each other longitudinally of the ody portion l, as shown in Fig. l there being spaces between the adjacent pairs oit strips which are intended "for a purpose to be hereinafter set forth.

'lhe body portion l, the layer oi wire mesh 2, and the strips oi wire mesh 5 are secured together to produce a unitary structure by means ol pieces oi wire 6 which are extended longitudinally ci the strips ot wire 5, there being preterably one oi these pieces ot wire associated with each strip of wire mesh, and said ieces oi wire being passed through the associated body portion l, layer oi wire mesh 2, and strips oi wire mesh 5, alternately from one lace et the jacket to the other, as shown in lig., 1i, to stitch the elements making up the jacket together. The ends orn the pieces oi wire which will be present alter the stitchin operation has been completed will be twisted, as suggested by Fig. el, to secure said ends in place,

The continuous is arranged in contact with the outer ace ot the jacket when same is in use, is preierably painted with a suitable waterproof paint to render the outer suriace oit the jacket waterprooi and to prevent rusting oi the material oi? which this continuous layer is termed when ,said layer is wire mesh.. When a jacket is required to withstand relatively low temperatures only, we prefer to use asphalt paint, but other paints may be used with equal success iii-desired.

When one ot our improved jackets is put in use in connection with a pipe, tor instance, said jacket is tornied about the pipe as shown. in Fig. 5, in which view l? designates the pipe layer oit material 2 which to be insulated. The strips 5 will be in contact with the pipe l? when the jacket is arranged about saidv pipe, the spaces between said strips permitting the jacket to bend tree ly rso that it may be arranged in circular term. When the jacket is arranged in circular form as described, the rods Ll will be brought into proximity with each other, as shown in Fig. 5. rlfhe edges oi the jacket which are brought together by the action oit bending said jacket about the pipe are then secured t0- gether by suitable fastening devices 7 which are caused to embrace the rods fl, and for this purpose, we preier to employ ordinary hog rings which may be bent to embrace ,the rods A4l, as suggested in l" ig. 5. rl`he important function of the rods l is to provide rigid means to which the fastening devices 7 may be attached, 'ior it is obvious that in the absence ot the rods el, the fastening devices 'Z would have Yto be connected directly wire meshor other material arrange d cent to the outer tace oi the body portion l, and it is quite likely that the wire mesh or other material may be torn by the fastening M an@ v devices, whereby the connected edges of the jacket would be permitted to pull away from each other.

When one ot our improved jackets is arranged about tlie pipe or other circular element as described, it is plain that said element will be surrounded by an insulating strip et uniform insulatin value throughout -whereby very high insu ating eiidciency will be obtained..

llt desired, we may substitute tor the wire stitches t a plurality ot individual anchor members 8, such as shown in Fig. 6, the tree ends or" said anchor members being twisted together as illustrated in the view mentioned to secure the body portion l, the layer ot material 2 and the strips oi material 5 together.

We claim:

l. An insulating strifcture comprising a body portion termed ot insulating material having its opposite sides formed with continuous suriaces, a continuous layerl oit material arranged in contact with one continuous surface ot said body portion, rods attached to said continuous layer oit material l at opposite ends thereof, a plurality ot strips ot material arranged lin spaced relation in contact the opposite continuous surtace oi said body portion, and fastening means extending through said body portion, said layer ot Amaterial and said lstrips ot material.

lll)

whereby a unitary insulating structure is produced..

2. An insulating structure comprising a body portion formed oi insulating material having its opposite sides termed with continnous surtaces, a continuous layer ot material v arranged in contact with one continuous surtace oia said body portion, said continuous layer ot material being provided with loops at opposite ends .thereof rods'arranged in said loops, a plurality o strips of material arranged 1n spaced relation in contact with the opposite continuous surface of said body porti-on, and fastening means extending through. said body portion, laid layer ofmaterial and said strlps of material whereby a unitary structure is produced.

p uous surfaceof said bod 3. An insulating stmcture comprising a v` body portion formed of insulating material having its opposite sides formed with continuous surfaces, a continuous layer of wire mesh arranged in contact with one continuous surface of said body portion, said continuous layer of wire mesh being coated with a aint adapted to render same waterproof an prevent rusting thereof, rods attached to said continuous layer of wire mesh at opposite ends thereof, a plurality'of strips o material arranged in spaced relation in'contactv with the o poaite continuous surface of said body portlon, and fastening means extending through said body portion, said layer of wire mesh and said strips of wire mesh whereby a unitary insulating structure is produced.

4. An insulating structure comprising a body portion formed of insulating material having its opposite sides formed with continuous surfaces, a continuous layer of ma terial arranged in contact with one continportion, rods attached to said continuous ayer of material at v opposite ends thereof, a plurality of strips of 4 material arranged in spaced relation in contact with the opposite continuous surface of said body portion, fastening means extending through said body portion, said layer of material and said strips of material whereby a unitary insulating structure is .produced, said insulating structure bein arranged about the element to be insulate in a manner to bring the edges at which said rods are arranged together, and fastening means embracing said rodsI whereby said insulating structure is maintained in position about the element to be insulated.

In testimonywhereof, we have hereunto set our hands.

OLIVER F. MOTTWEILER.

DANIEL C. DRILL. 

